Boring apparatus.



.L HIIWABTH"& W; PRUSZKDWSKI. somma APPARATUS.

(no Modal (Application Aed Feb. 18. 1899.)

` No. 654,98Iv Patanted July 3|, |900.

J. HUWARTH & W. PRUSZKOWSKI.

sommi APPARATUS.

- (Application filed Feb. 18, 1899.)

3 Sheets-Sheet 2,

(llo Model.)

an .w I Vy www 7 Q z P. A 7 E @@MMM/ @a /jg @ww/@m No. 654,98l. Patented Iuly 3|, |900. J. HUWARTH & W. PBUSZKOWSKI.

BUBING APPARATUS.

(Application filed Feb. 18,y 1899.) (No Model.) 3 Sheets--Shei 3.

l il' w: noms Parana do. crown-1o.. wmmarbu. u, c.

To @ZZ whom t may concern:

' certain height, when it is forced down again UNrrnn STATES ATENT rrtCr..

JOSEF HOWARTII AND VVLADYSLAVV"PRUSZKOVVSKL OF SCHODNIGA,

' AUSTRIA-HUNGARY.

BORING APPARATUS.

srscrrcafrroiv forming part of Letters reagent No. 654,981, dated July 31, 1900. Application filed February 1,8, 1899. Serial No. 706,008. (No model.)

Beit known that we, JOSEF IIOWARTH and WLADYsLAw PRUszKowsKI, subjects of the Emperor of Austria Hungary, residing at Schodnica, inthe Province of Galicia, in the Empire of Austria-Hungary, have invented certain new and useful Improvements inBorfl ing Apparatus; and we'do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable othl ers skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

This invention relates to a washout-boring apparatus, more particularly for deep bor-V ings, so arranged that. the boring-tool is raised against the pressure of a spring by the pres- V sure of the washout-water and is released at a by the springpre`ssure against the bottom of the bore-hole. The washout-water effects the raising of the boring-tool by being forced into a chamber kept'closed by a suitable valve de.-` vice, so as to raise a piston therein which is separably connected with the rod of the b'ori ing-tool, so that this is thereby raised until it is disconnected from the piston, and the valve deviceis simultaneously opened, so that the pressure-water escapes and allows the boring-tool to be forced down again. By this motion the valve device is closed again and the connection of the boring-tool is reestablished for renewed action. This entire device, together with boring-tool, may be eccentrically mounted with reference to the boref tube in order that the tool may serve as an enlarging boring-tool in the usual and wellknownmanner.

That the invention may be fully understood I- will describe the same in detail, refe erence being had to the accompanying drawings, in which Y Figure I is a view of the lower end of a borehole and the boring apparatus,'illustrating the bore, bore-tube, and the sleeve that sup-y ports the boring appliancesfin section, said appliances being s hown'in" elevation. Fig. l.a is a vertical sectionof the boring appliances,

the bore-tube being omitted. Fig. 2 is a cross= sectional view of Fig. l, taken on a line above the sleeve e'. Fig. 3 shows sectional views, drawn to an enlarged scale, illustrating, re- `spectively,the upper, intermediate, andlower portions of the boring appliances shown in Fig. la, the bore-tube being omitted.

, The boring or cutting tool a is screwed into the threaded lower end of the hollow piston G', which can move up and down in the bore` cylinder fm, placed within the bore-tube P. The hollow piston-rod G has holes g for the entrance of the washoutswater from the chamber B of the bore-tube above it, and it has a perforated ring T screwed onto it, which on the downward stroke under the action of the yspring F can strike against the caoutchouc buffer N, lying upon ring R., which is xed to tube m and serves both as guide to the piston-rod and as abutment for the spring F. The buer N receives the blows of the ring T when the cutter is not acting on the bottom ofthe bore-hole. y The boring-tool is raised by means of a pis* ton k, moving in a chamber A of the cylinder m, `which is separated from chamber B by a partition w and is always in connection with the conduit for the washout-water. The piston lc is for this purpose .arranged to slide in the chamberA upon the central Water-supply pipe s and is acted upon by a spring Q, which tends to force it downward.

. With the piston lo is combined a downward tubular projection r, in which the piston-rod tis fixed and which has holes o for the issue into chamber A of the water supplied through sl The piston-rod t is conically enlarged at the upper end b and has at its lower end a coned head g. The rod t passes freely through an opening of the partition w and also through the valve device d, formed as a piston-slide,

and through the conical bottom i of a cylinder c, acting as guide to the piston-slide and fixed to the partition w.

' In the sides of the cylinder c are formed rectangular openings and in the pistonslide d there are similar openings z in jorder when the piston-slide is in the lowered posi# tion to allow the washout-Waterto pass from the space A through slide d into thepchamber B. In this position of the slide the spring h, situated between it and the bottom c' of cyl- ICO l inder c, will be compressed. The slide is' held in this position by means of spring- Y catches n, which are pivoted to lugs on the partition fw within the opening thereof and which when the slide is in the lowered or openI position spring over, the upper edge thereof. They are moved out of engagement by means of the conical part b ofthe piston?Y d rod t, which presses them apart in descending with the piston k.

The piston-slide is carried downward into its open position by means of spring-catches the hooked4 ends `are forced outward, so as to free the pins p. v v

The connection of the two'pistomrods G and t, and conseqljlently that of the boringtool, With thepiston lo is effected by means of catches Z, pivoted to the rod G, and whose hooked upper ends rare drawn toward each other by means of a springfring o, so that on the descent of the piston-rod f they hook ontoA the coned head g as this is forced down between them. The disconnection of thehooks is ehfected on the upward motion of the rodt and the boring-tool by the coned bottom 'L' of cylinder c, against which the hooks Zy bear, so'y as 4to be forced apart thereby as they rise.

The action of the apparatus above described is as follows: When the slide d is i-n the upper or closed position, the washout-water inf.

trod uced und er pressure into space A through tube s will raise piston 7c in compressing its.

spring Q.v yThe head g of piston-rod t being engaged with the catches Z, piston-rod G, piston G', and boring-tool will rise with k', spring F being at the same' time compressed by pis-` ton G. As soon as the piston lc and the boring-tool have reached their highest position the spring-catches q engage with the pins p of the piston-valve. At'thesame time, however, the upper rounded ends of the catches Zslideagainst the coned surface 1l and are forced thereby sofar apart as to be disengaged from the head g. This position of the parts Vis that shown in Fig. 3. The piston G',

withtheboring-tool, being thus deprived of support, they are then propelled downward by the spring F. Before the commencement of this downwardmotion the openin gs of cylinder c are still closed by the slide d, and the washout-water forced in through tube s, find-A ing the chamber Bclosed, tends to raise piston k still higher; but as soon as the springcatches vq lbegin to descend with tube G andthe boringtool they draw the piston-slide ddownward, so as toallow of the escape of water-pressure in The Vspring-catches are then forced outward by their inclines Qc', as described, so as to release the pins of the slide, which is then in the position in which the openings a: are fully uncovered. At the same time the catches fa spring over the top edge of the slide d and holdit down in the open position against the upward pressure exerted by the spring 7L, Awhich has been compressed by the downward motion of the slide. The wash-,water can now flow through the openings or ports e from chamber A to chamber B and from thence through the holes g' in the hollow boring-tool spindle G into the lower end of the bore-hole, and from-which such water and the spoils may be pumped in the usual manner. Owing to the decreased upward pressure on piston It the compressed spring Q can now force it downward. The head gis thereby forced down between the catches Z again, which engage with the top thereof, and the cone b of pis# tonrod t forces theA upper ends of catches 'n apart, so as to free the piston-valve d, which is consequently forcedfupward by its spring h. The openings a: being thus closedagain, thepressure-water enteringv through s is cut oifrom chamber B, and consequently fills the space A below piston lo, again forcing this upward and raising the boring-tool. The described operation is then repeated and continues as long as pressure-water is supplied.

As shown at Figs. l and 2, the entire boring apparatus rests duringthe boringupon a shoe S, which is screwed into the bore-tube P. Upon the shoe rests a sleeve j, carrying two parallel' transverse plates f, having slots a for the reception of studs e, fixed on aring e', attached to the'cylinder m of the boring apparatus. lThe ring eis so connected tothe cylinder that the studs v@are atright angles to the boring-cutter. .The guide-slots ain theV plates fare inclined, as indicated in dotted lines, so that at the lowest or working ,posi'f tion ofthe boring-tool its axis is eccentric to the bore-tube P, and the boring-tool consequently makes a bore-hole of larger diameter than that of the bore-tube, the arrangement being made in the usual and well-known manner. Y 1

' When the apparatus is drawn upward, the' studs@ slide `upward in the slots u, and the boring-tool then assumes a centr-al position in the bore-tube, so that-it can then be drawn up through the latter, together with the sleeve j, carrying the boring apparatus.

e We claim 'f d Y 1. Shaft or well boring appliances, com priaA inga bore tube or casing, a boring-tool, a vertical, hydraulic vpower-cylinder, itsA piston, means for supplying water under pressure to the pressure-chamber of thel cylinder below the piston, a spring acting upon the upper face of said piston, a connection between the said piston and tool, means for severing said connection when the tool is raised and for reestablishing `said connection by the downward movement of said piston, and means for',

IOO

IIO

'exhausting the water from thepower-cylinder into the lower end of the bore-casing, for the purpose set forth. l

2. Shaft or well boring appliances, comprising a bore tube or casing, a boring-tool, a guide-casing for and in which said tool has vertical motion, a tubulartool-rod in communication with the lower end of the bore-casing, a vertical hydraulic power-cylinder within the guide-casing,the cylinder-piston, a spring acting upon the upper face of said piston, means for admitting water under pressure to the pressure-chamber of the cylinder below its piston, a connection between the latter and the tool-rod, means for severing said connection during the upward movement of said rod and restablishing such connection by the downward movement of the piston, and means for exhaustingthe contents of the cylinder pressure-chamber into the tool-rod, for the purpose set forth.

3. e Shaft or well boring appliances, comprising Va bore tube or casing, a boring-tool, a guide-casing for and in which said tool has vertical motion, a tubular tool-rod in communication with the lower end of the bore-casing, a vertical hydraulic power-cylinder within the guide-casing, the cylinder-piston a spring acting upon thel upper face of suchgpiston, means for supplying water under pressure to the pressure-chamber of said cylinder below its piston, a connection between the latter and the tool-rod, means for severing said connection during the upward movement of Vsai d rod and for restablishing such connection by the downward movement of the piston, a valve controlling exhaust-'ports in the pressure-chamber ofthe powercylinder,and ports in communication withv the tool-rod, and means operating said valve to periodically open and close said ports, for the, purpose set forth.

4. Shaft or well boring appliances, com prising 'a bo're tube or casing, a boring-tool, a guide-casing for and in which said tool has vertical motion, a tubular tool-rod in communication with the lower end of the bore-casing, a vertical hydraulic power-cylinder within the guide-casing, the cylinder-piston, a spring acting upon the upper face of said piston, means for admitting water under pressure to the pressure-chamber of the cylinder below its piston, a connection between the latter and the tool-rod, means for severing said connection during the upward Inovement of said rod and restablishin g such connection bythe downward movement of the piston, and means for exhausting the contents of the cylinder pressure-chamber into the tool-rod; in combination with means for locking said rod to the guide-casing without interfering with its vertical movements, for the purpose set forth.

5. Shaft or well boring appliances, comprising a bore tube or casing, a boring-tool, a

guide-casing for and :in which said tool 4has vertical motion, a tubular tool-rod in communication with 'the lower end df the bore-casing, a vertical hydraulic power-cylinder within the guide-casing, the cylinder-piston, a spring acting upon the upper face of such piston, means for supplying water under pressu re to the pressure-chamber of said cylinder below its piston, a connection between the latter and the tool-rod, means for severing said connection during the upward movement of said rod and for restablishing such connection by the downward movement of the piston, a valve controlling exhaust-ports in the pressure-chamber of the power-cylinder and ports in communication with the toolrod, and means operating said valve to periodically open and close said ports; in combination with a lockingdevice locking the valve against motion when the ports are open, and

means acting upon said locking device torelease the valve by the downward movement of the piston, for the purpose set forth.

6. Shaft or well boring appliances, comprising a cylindrical casing closed at its upper end,a partition dividingsaid casinginto upper and lower chambers,a piston fitted in the upper chamber, a spring acting upon the upper face of said piston, means for supplying water to saidpchamb'er below the piston, atubulartoolrod closed atits upper end, said rod having aipiston-head at its lower end fitting the aforesaid lower chamber, and ports in communication therewith, a connection between the piston and tool-rods, means for severing said connection during the upward movement of the piston, and for restablishing the same by the downward movement of said piston; in

combination with a valve controlling ports between the upper casing-chamber below the'` piston and the lower casing-chamber, and means operating said valve to periodically open and close said ports, for the purpose set forth.

7. Shaft or well boring appliances, comprising a cylindrical casing closed at its upper end, a partition dividing said casing into upper and lower chambers, a piston fitted in the upper chamber, a spring acting upon the upper face of said piston, means for supplying water to said chamber below the piston,la tubular tool-rod closed at its upper end, said rod having a piston-head at its lower end fitting the aforesaid lower chamber, and ports in communication therewith, a connection between the piston and tool-rod, means for severing said connection during the upward movement of the piston, and for reestablishing the same by the downward movement of said piston; in combination with a valve controlling ports between the upper casing-chamber below the piston and the lower casingchamber, means operating said valve to' periy odically open and close said ports, a locking device locking the valve against motion when the ports are open, and means 'acting upon said locking device to release said valve, for

lthe purpose set forth.

8. Shaft or well boring appliances, comprisL IOO IIO

ing a boretube or casing,a boring-tool, aivertical hydraulic power-cylinder, its i piston, a Aspring acting onV the 'upper face thereof, means for supplying water under' pressure to the-pressure-chamber of the cylinder --below .its piston,v a connection between. the latter andthe boring-tool, means for severing said 'connection during the upward motion of the piston and 'for `restablishing the same by the'downward movement of said piston, and means for exhausting the water from the pressure-chamber of the cylinder into the lower endofvth'e bore-casing; in combination with a sleeve looselyseated in said casing near its lower'end, andoblique guides engaging the boring-tool and. guiding the same, substantially as and for the purpose set forth.

9; In shaft or well boring appliances, the combination'with the bore tube or casing and a vertically-movable rigid toolrod having the boring-tool rigidly secured thereto, said rod arranged axially in the casing; of a guide 1 in the' latter guiding'said rod from its normal axial position into an operative position ec-` centric to saidbore-tube and holding said rod 't insaid position "during its boring operation,

forthe purpose set forth,

10.v Inv shaft orwell boring appliances, the

combination with the bore tubeor casing provided with an .annular seat, anda verticallymovable tool-rod arranged axially within said tube and having radial pins diametrically opposite each other; of a guide-sleeve seated on the aforesaid tube-seat and having cross-partitions provided with oblique slots guiding the tool-rod from, an axial inoperative tovan eccentric operative position and i j vice versa as said rod moves vertically in one or the other direction, for the purposes setv forth. i

' l1. Shaft or well boring appliancesfcomprising a main casing closed at its upper end,

a partition dividing said casin g into two charnkbers, a 'pistoni fitted inthe uppercharmber,

and having hollow "pistonrodsprojecting from its oppositevfaces, the downwardlyprojecting rod having ports o and a solid( extension having a tapering upper enlargement b 't and a conical lower head g,'a tubular :toolrodv provided with ports in communication with the lower casing-chamber and with a piston-head fitting said casing, a Springfa'cting vupon the upper face. .of said piston,l and spring-pressed latches engaging the Iaforesaid'head' g on piston-rod; in combination with a valve-casing secured in the partition of the main casing and havingv ports in colmmunicatiou with the lower chamber thereof, a cylindrical reci procatory valve in' said valve# casing mounted on the lower piston-rod and open to the upper main casing-chamber and having ports adapted toreg'ister with those in its casing, a spring acting upon the valve to `normally hold the same with aforesaid `ports out of register, a plug secured in the lower part of the valve-casing having a conical axial projection t', a' connection between the aforesaid valve and tool-rod, means for severings'aid connection during the downward movement of the rod and reestablishing the same during its upward movement, a springactuated locking device locking the valve when moved to bring the aforesaid ports into register, and means outhe lower piston-rod for disengaging said locking deviceV from the valve during the'fdownward movement of said rod, substantially as and for the purpose set forth.

Intestimony thatwe claim the foregoing as ourinvention we lliavesigned our names in presence of two subscribing witnesses. v

JOSEF .HOWARTIL r WLADYSLAW PRUSZKOWSKI.

Witnesses:

GERSUMM, LUIs BAIRS. 

